"Manage cookies" breaks UI on mobile

On mobile, Apps can use the phones browser to render website content (html) and put its frame inside the app. So the behaviour and look on such embeds should be exactly like as when you’d browse to the url with your phones browser. To test this, I opened Twitch in my phones chrome browser. And its exactly the same. Parts of the window are cut off, not scrollable to, when choosing “manage cookies”:
Does this mean all chats that are embedded in apps or websites that are being visited on a mobile device have this bug?

And its getting even worse when the prefered language is not english. The cookie-text may be longer in some languages, which causes the two buttons on the bottom “manage cookies” and “accept cookies” to be cut off, leaving you stuck with the cookie text. You cannot confirm nor you can go back.

And the popout-url (Twitch) has the same behaviour